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 v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-08-12 17:02:34 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	27798
polrootsbound	27805
RgX_normalize1	36406
ZX_realroots_irred	48668
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166988
split_pols	166988
splitcauchy	166988
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268041
QX_complex_roots	297218
_gen_zero	326083
fix_roots1	398955
conformal_mapping	469159
split_1	469159
split_0_1	469531
split_0_2	469531
logradius	495291
optimize_split	495291
parameters	495291
split_2	495291
split_fromU	495291
update_radius	495291
split_0	495663
dft	503731
refine_F	503731
all_roots	537405
clean_roots	537447
a_posteriori_errors	538506
fix_roots	538506
mygprec_special	538506
logmodulus	608838
logpre_modulus	608838
abs_update_r	781170
ind_maxlog2	904901
isexactscalar	934563
isreal	964450
initdft	999022
dual_modulus	1015266
usp	1127952
ZX_sturmpart	1129070
check_ab	1179701
tocomplex	1219427
isvalidcoeff	1235239
ZX_Uspensky	1315170
conformal_basecase	1407596
conformal_pol	1407715
fujiwara_bound_real	1408278
split_complete	1529832
homothetie	1614973
logmin_modulus	1618263
append_clone	1618834
root_error	1919309
mygprecrc_special	2185110
ZX_rescale2prim	2237750
cmp_complex_appr	2249834
fujiwara_bound	2276797
checkbound	2356532
refine_H	2466499
scalepol	4300827
mygprec_absolute	4356249
_mp_mul	4430508
logmax_modulus	4461423
bkeval_single_power	5250337
splitpoleval	5250337
newton_polygon	5526720
X2XP1	6001240
_mp_sqr	6349851
dblexp	6569676
quicktofp	7000166
RgX_gtofp_bit	7056167
abs_update	8028428
mydbllogr	9574159
homothetie2n	9988143
_gen_nored	11267916
eval_rel_pol	13181730
fft	14226082
_gen_one	14524586
ZX_to_ZiX	16458564
pol_to_gaussint	17643153
_mp_add	24942085
_mp_cmul	35116676
myshiftrc	35618226
homothetie_gauss	36605206
findpower	41066629
lower_bound	41066629
graeffe	49676571
mydbllog2r	58111631
mygprec	63984534
ZiX_sqr	99353142
myshiftic	136522990
mygprecrc	215759002
mydbllog2i	227102473
dbllog2	304805056

Generated by: LCOV version 2.0-1