Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 94.2 % 1561 1470 Test Date: 2026-07-22 22:45:42 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15274
_sqrtnr	22877
polrootsbound_i	27800
polrootsbound	27807
RgX_normalize1	36408
ZX_realroots_irred	48668
realroots	50627
ZX_sturm_irred	117163
ZX_sturm_i	123558
polsolve	166971
split_pols	166976
splitcauchy	166980
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268043
QX_complex_roots	297203
_gen_zero	326030
fix_roots1	398949
split_1	469124
conformal_mapping	469126
split_0_1	469493
split_0_2	469494
update_radius	495255
logradius	495257
split_2	495257
split_fromU	495258
optimize_split	495259
parameters	495259
split_0	495629
refine_F	503690
dft	503700
all_roots	537385
clean_roots	537434
fix_roots	538490
a_posteriori_errors	538493
mygprec_special	538495
logmodulus	608816
logpre_modulus	608816
abs_update_r	781157
ind_maxlog2	904839
isexactscalar	934563
isreal	964382
initdft	998957
dual_modulus	1015194
usp	1127825
ZX_sturmpart	1128935
check_ab	1179563
tocomplex	1219382
isvalidcoeff	1235245
ZX_Uspensky	1315028
conformal_basecase	1407487
conformal_pol	1407606
fujiwara_bound_real	1408132
split_complete	1529745
homothetie	1614881
logmin_modulus	1618088
append_clone	1618769
root_error	1919216
mygprecrc_special	2185045
ZX_rescale2prim	2237594
cmp_complex_appr	2249761
fujiwara_bound	2276602
checkbound	2356256
refine_H	2465884
scalepol	4300453
mygprec_absolute	4355847
_mp_mul	4429697
logmax_modulus	4460906
splitpoleval	5245734
bkeval_single_power	5246231
newton_polygon	5526473
X2XP1	6000746
_mp_sqr	6348292
dblexp	6568890
quicktofp	6997488
RgX_gtofp_bit	7055846
abs_update	8026400
mydbllogr	9572431
homothetie2n	9987030
_gen_nored	11234358
eval_rel_pol	13180337
fft	14224039
_gen_one	14509099
ZX_to_ZiX	16441572
pol_to_gaussint	17641202
_mp_add	24920293
_mp_cmul	35041553
myshiftrc	35613427
homothetie_gauss	36582262
lower_bound	41051549
findpower	41052048
graeffe	49632838
mydbllog2r	58096677
mygprec	63959448
ZiX_sqr	99289138
myshiftic	136186856
mygprecrc	215653226
mydbllog2i	226870160
dbllog2	304402897

Generated by: LCOV version 2.0-1