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 30674-be81ecfdd4) Lines: 1467 1530 95.9 % Date: 2026-02-12 09:23:52 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	15198
_sqrtnr	22588
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48562
realroots	50627
ZX_sturm_irred	116577
ZX_sturm_i	122974
split_pols	166689
polsolve	166692
splitcauchy	166697
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296175
_gen_zero	326002
fix_roots1	398359
split_1	467822
conformal_mapping	467823
split_0_1	468186
split_0_2	468186
update_radius	493872
parameters	493873
split_2	493873
split_fromU	493875
logradius	493876
optimize_split	493876
split_0	494238
refine_F	502261
dft	502264
all_roots	535890
clean_roots	535932
a_posteriori_errors	536983
fix_roots	536987
mygprec_special	536995
logmodulus	606588
logpre_modulus	606593
abs_update_r	778562
ind_maxlog2	902487
isexactscalar	931714
isreal	961697
initdft	996138
dual_modulus	1012259
usp	1125901
ZX_sturmpart	1128209
check_ab	1178857
tocomplex	1213243
isvalidcoeff	1228149
ZX_Uspensky	1313727
conformal_basecase	1403590
conformal_pol	1403709
fujiwara_bound_real	1406689
split_complete	1525463
homothetie	1609738
append_clone	1613577
logmin_modulus	1614482
root_error	1911690
mygprecrc_special	2178331
ZX_rescale2prim	2233531
cmp_complex_appr	2237365
fujiwara_bound	2271113
checkbound	2354844
refine_H	2460106
scalepol	4288492
mygprec_absolute	4337684
_mp_mul	4374553
logmax_modulus	4449886
bkeval_single_power	5235090
splitpoleval	5235365
newton_polygon	5505653
X2XP1	5989765
_mp_sqr	6298238
dblexp	6547708
quicktofp	6976940
RgX_gtofp_bit	7029559
abs_update	8004849
mydbllogr	9545825
homothetie2n	9955327
_gen_nored	11206461
eval_rel_pol	13135068
fft	14157078
_gen_one	14471779
ZX_to_ZiX	16455463
pol_to_gaussint	17585214
_mp_add	24663664
_mp_cmul	34775735
myshiftrc	35499077
homothetie_gauss	36495920
findpower	40950128
lower_bound	40950358
graeffe	49505310
mydbllog2r	56174056
mygprec	63748319
ZiX_sqr	99022273
myshiftic	135892352
mygprecrc	215159536
mydbllog2i	226434964
dbllog2	302146668

Generated by: LCOV version 1.16