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 30603-c72b2decfc) Lines: 1467 1530 95.9 % Date: 2026-01-07 09:21:48 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	15202
_sqrtnr	22593
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48563
realroots	50627
ZX_sturm_irred	116568
ZX_sturm_i	122965
split_pols	166689
polsolve	166696
splitcauchy	166699
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296157
_gen_zero	326014
fix_roots1	398348
conformal_mapping	467783
split_1	467784
split_0_1	468145
split_0_2	468145
logradius	493830
parameters	493833
update_radius	493833
split_2	493834
optimize_split	493836
split_fromU	493836
split_0	494198
refine_F	502215
dft	502224
all_roots	535872
clean_roots	535917
a_posteriori_errors	536969
fix_roots	536975
mygprec_special	536982
logmodulus	606537
logpre_modulus	606540
abs_update_r	778508
ind_maxlog2	902428
isexactscalar	931714
isreal	961620
initdft	996057
dual_modulus	1012182
usp	1125969
ZX_sturmpart	1128289
check_ab	1178916
tocomplex	1213135
isvalidcoeff	1228149
ZX_Uspensky	1313783
conformal_basecase	1403463
conformal_pol	1403585
fujiwara_bound_real	1406770
split_complete	1525370
homothetie	1609609
append_clone	1613491
logmin_modulus	1614313
root_error	1911567
mygprecrc_special	2178249
ZX_rescale2prim	2233597
cmp_complex_appr	2237149
fujiwara_bound	2271065
checkbound	2354962
refine_H	2459899
scalepol	4288119
mygprec_absolute	4337353
_mp_mul	4374476
logmax_modulus	4449466
bkeval_single_power	5234634
splitpoleval	5235100
newton_polygon	5505138
X2XP1	5990017
_mp_sqr	6298110
dblexp	6547196
quicktofp	6976769
RgX_gtofp_bit	7028907
abs_update	8003867
mydbllogr	9544690
homothetie2n	9954276
_gen_nored	11198017
eval_rel_pol	13134189
fft	14155078
_gen_one	14470207
ZX_to_ZiX	16450667
pol_to_gaussint	17583583
_mp_add	24661277
_mp_cmul	34758546
myshiftrc	35494552
homothetie_gauss	36486584
findpower	40942649
lower_bound	40942689
graeffe	49494679
mydbllog2r	56169915
mygprec	63739964
ZiX_sqr	99005197
myshiftic	135794515
mygprecrc	215124696
mydbllog2i	226355468
dbllog2	302018515

Generated by: LCOV version 1.16