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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30711-c92306d4b4) Lines: 1467 1530 95.9 % Date: 2026-02-25 09:24:21 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15204
_sqrtnr	22597
polrootsbound_i	27123
polrootsbound	27130
RgX_normalize1	35731
ZX_realroots_irred	48570
realroots	50627
ZX_sturm_irred	116583
ZX_sturm_i	122978
split_pols	166696
polsolve	166700
splitcauchy	166704
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266890
QX_complex_roots	296183
_gen_zero	326019
fix_roots1	398356
conformal_mapping	467802
split_1	467805
split_0_1	468163
split_0_2	468164
logradius	493852
split_2	493855
parameters	493856
split_fromU	493858
update_radius	493858
optimize_split	493859
split_0	494222
refine_F	502245
dft	502246
all_roots	535891
clean_roots	535939
fix_roots	536990
a_posteriori_errors	536992
mygprec_special	536997
logpre_modulus	606577
logmodulus	606579
abs_update_r	778575
ind_maxlog2	902480
isexactscalar	931714
isreal	961663
initdft	996102
dual_modulus	1012239
usp	1125940
ZX_sturmpart	1128199
check_ab	1178826
tocomplex	1213238
isvalidcoeff	1228143
ZX_Uspensky	1313703
conformal_basecase	1403528
conformal_pol	1403649
fujiwara_bound_real	1406684
split_complete	1525432
homothetie	1609681
append_clone	1613564
logmin_modulus	1614354
root_error	1911690
mygprecrc_special	2178341
ZX_rescale2prim	2233621
cmp_complex_appr	2237356
fujiwara_bound	2271119
checkbound	2354782
refine_H	2460012
scalepol	4288336
mygprec_absolute	4337588
_mp_mul	4374738
logmax_modulus	4449625
bkeval_single_power	5235582
splitpoleval	5235607
newton_polygon	5505495
X2XP1	5989955
_mp_sqr	6298521
dblexp	6547507
quicktofp	6977195
RgX_gtofp_bit	7029396
abs_update	8004227
mydbllogr	9545093
homothetie2n	9954896
_gen_nored	11208566
eval_rel_pol	13135007
fft	14155909
_gen_one	14473588
ZX_to_ZiX	16449645
pol_to_gaussint	17584549
_mp_add	24665425
_mp_cmul	34779029
myshiftrc	35496682
homothetie_gauss	36492335
findpower	40945812
lower_bound	40945976
graeffe	49503838
mydbllog2r	56171681
mygprec	63745222
ZiX_sqr	99017307
myshiftic	135860775
mygprecrc	215132381
mydbllog2i	226395806
dbllog2	302081747

Generated by: LCOV version 1.16